What are the following additional options of reset and supervisor ICs used for?

TN0941

12/16

DocID023775 Rev 1

6.6

Anti-tampering functions

Anti-tampering functions are specific functions especially designed to provide intrusion

detection, and to protect against unfriendly or hostile activity. They include:

•

Over/under operating temperature detection

(customer-selectable and factory trimmed)

•

Over/under operating voltage detection

•

Four high impedance physical tamper inputs

•

Security alarm (SAL) if tampering is detected

Anti-tampering functions mainly address a manufacturer’s point of sales (POS) terminals

and other systems. They meet physical and/or environmental intrusion monitoring

requirements mandated by various standards, such as the Federal Information

Processing Standards (FIPS) Pub 140-1: Security Requirements for Cryptographic

Modules, published by the US Department of Commerce/National Institute of Standards

and Technology.

More details

See AN2377: Using the STM1403/1404 security supervisors to clear external SRAM

Suggested products

For further information on anti-tampering functions, please refer to STM1404.

6.7

pressed before a reset is asserted. This option is specific to the Smart Reset™ devices. See

Section 7: What is a Smart Reset™ and what is it used for? for more details.